THE DUD is back. Fresh from the arms of Natassja Kinski, Dudley Moore moves in on two more young things (Amy Irving and Anne Reinking) in Blake Edwards' obstetrical fantasy, "Micki & Maude," an offensive defense of bigamy written by new screenwriter Jonathan Reynolds. May his chest hair fall out.

It's no surprise that Edwards jumped at a chance to direct this simpering, sexist attack on the women's movement, which is no less vicious than Brian De Palma's physical assault on women in "Body Double." If Edwards humiliated his own wife Julie Andrews in "S.O.B.," could Reinking and Irving hope to be less than victims?

Reinking is the reluctant Micki and Irving is the overeager Maude, working women who turn into morons during concurrent, unexpected pregnancies. Both are fertilized by a TV reporter who just wants to be a mother. Maybe they don't know where babies come from.

Moore, who can't seem to understand that he is not a sex symbol, turns up again and again as a leading lover. Here he plays the puny but potent Rob Salinger, a TV reporter whose wife Micki -- a real bimbo who's about to be named a judge -- neglects him for her career. Then Rob meets Maude, a cellist who drools when she sees wingtips. Within 48 hours, surprise, surprise, everybody's pregnant. Then Rob marries Maude, but neglects to divorce Micki. Why? Well, he's just too nice.

Micki has an "irritable uterus" and must stay in bed and whine for seven and a half months. Maude, a little less whiny, has an audition for the Met. But, oh my, her water breaks during her rendition of Brahms' Lullaby. There's little either actress could do to make these characters appealing. And Moore continues to drag his feet, except for the inevitable drunk scene and his slapstick in the delivery room.

When the two Mrs. Salingers do find out about each other, they are understandably miffed. Despite anger, a new friendship and vows of abstinence, both hop right back in the sack with drab, old Rob. "Micki & Maude" is a pain, laborious and predictable despite the tantalizing nature of the material. MICKI & MAUDE -- At area theaters.